A free app for Android, by Saay Whaat.

Blue Monsters: Rainbow Room is a 3D platform game where you need to collect as many materials as possible to open a mysterious portal. In this game, you will have to use your brain and solve some hard puzzles to get to the next level.

The puzzles will test your brain and intelligence. Make sure to stay calm and listen carefully to your surroundings. 

You need to figure out where the Rainbow Friends are in the level. It’s not easy to do. You need to listen carefully and try to solve the puzzle.

You can collect materials from different sources like the carton box, the trash can, and even the walls. Make sure to get all the materials to open the portal.